A swarm is usually a job for a beekeeper.
A cluster of bees hanging on a branch, fence or wall is a swarm resting while it looks for a new home, and it often moves on by itself. Don't spray it. Local beekeepers often collect swarms: your state's beekeeping association can point you to one nearby.
If the bees are going in and out of a gap in the house, choose that answer instead: that one is a job.
So the job goes to a pest business that works near you.
In Queensland: think it might be fire ants? Report them to Biosecurity Queensland before anything else. The law asks for a report within 24 hours.
In NSW: think it might be fire ants? Report them to the NSW Biosecurity Helpline first.
Report European wasps in WA first.
Western Australia's agriculture department wants every European wasp sighting reported, and it deals with the nest. Report it to its Pest and Disease Information Service. Keep people and pets away and don't spray it.
